Donahue, nearly 37, writes of an unexpected career change in her new book "Growgirl: How My Life After The Blair Witch Project Went to Pot," out Jan. 5.

The former scream queen discovered high-grade medical marijuana after doctors prescribed it to treat her PMS. It became a new job after the actress, frustrated by a lack of opportunities, gave up on Hollywood.

Donahue met a marijuana grower from "Nuggettown," a pot-growing community in Northern California. She explained that she was "always an avid gardener," and decided to grow and sell high-grade medical marijuana herself.

"I became a solitary country girl," she explained.

Donahue gave up the agricultural project after she decided to write her book -- and after a friend got arrested.

Will medical marijuana be legalized? "I think you're going to see [medical marijuana] on a lot of ballots over the next few years," she to the Philadelphia Inquirer. "There has been enough support for medical use if not outright legalization that I don't think it will go away."